Combination-lock



2 Sheets-Sheet 1.

(ModeL) I R HILDWEIN COMBINATION LOOK. No. 365,382. Patented June 28,1887.

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(ModeL) 2 Sheets-"Sheet 2.

R. HILDWEIN.

- COMBINATION LOCK.

No. 365,382. Patented June 28, 1887.

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UNITED STATES PATENT OFFICE.

ROBERT HILDWEIN, 'OF CLEVELAND, OHIO.

COMBINATION-LOCK.

' SPECIFICATION forming part of Letters Patent No. 365,382, dated June28, 1887.

Application filed January 31, 1887." Serial l\'o. 225.948. (Model) I Toall whom, it may concern.-

Be it known that I, ROBERT HILDWEIN, of

Cleveland, in the county of Ouyahoga and State of Ohi0,-have invented acertain new and Improved Combination-Lock; and I do hereby declare thatthe following is a full,

clear, and complete description thereof.

My invention is an improvement in combinationlocks; and the object ofthe same is to secure a simple and effective construction.

In the drawings I have shown a lock embodying the principle of myinvention, and

such invention is fully disclosed in the following specification andclaims.

In the drawings, Figure 1 is an exterior side view of the lock. Fig. 2is an edge view of the same. Fig. 3 is a View from the side 0p positethat shown in Fig. 1, with the side of the casing removed. Fig. 4 is aview from the same side, with the bolt and gear-disks removed. Fig. 5 isa. transverse section on line 1) 1), Fig. 4. Fig. 6 is a longitudinalsectional view on line a" 00, Fig. 1. Fig. 7 is a detached view of thebolt. Figs. 8, 9, and 10 are detached views of three of the disk-gears.Fig. 11 is a transverse section on line a; m, Fig. 6.

The general form and shape of the lock is shown in Figs. 1, 2, and 3.

The casing is composed of two parts, A and B, the latter being acap-plate closing and forming one side of the casing. The main part A ofthe casing is provided with a guideway, E, for the bolt, within andadjacent to the end of the said part A, which has an openingtherethrough for the passage of the bolt. The bolt F is shown in Fig. 5,and is provided with the notch G in its side and on its end witha'narrow projection or stem, F.

To the inner side of the part A of the casing is attached the stud D,and upon this stud are pivoted the lever C and the gear-disks K, M, N,and O. The lever G is provided at one end with the laterally-projectinglug or stop b, and the opposite end is reduced to form a spring, a, theouter end of which engages and is retained within a notch, d, in thecasing, as best seen in Fig. 4, for a purpose which will hereinafter beexplained.

The lock is provided with an index-knob of usual construction, the stem0 of which ex-' tends through the. casing A. Such stern has,

within the casing, a pinion, J, fitted thereon I in any usual manner, soas to turn therewith, and the retaining screw 0 secures the pinion J andthe knob together and in operative posi tion. The pinion J is of suchlength as to engage the gear-teeth of all the disks in the lock.

To effect the movement "of the bolt F, I pivot the stem I in the casingand provide the same on the outside of the lock with a handle, I, and onthe inside of the casing with the crank H, the pin H of which engagesthe slot G in the bolt.

The gear-disks K M N O are of such size that when mounted on the stud Dthe unbroken parts of the peripheries of the same will be just in therear of the stem F of the bolt F, when the latter is in its mostadvanced position. Each of said disks is provided on one side with anotch, P, of a size to receive the stem F of the bolt when it is broughtopposite the same or in line therewith. On the side opposite the notch1?, each disk is provided with a certain number of gear-teeth and acurved or segmental slot which is concentric with the periphery of thedisk. are designated in the drawings by the refer- These slotsence-letters f, g, h, and t, (seeFigs. 3, 8, 9, and

10,)and when the disks are in operative po sition they engage the lug bof the lever 0, said lug being of such length as to pass through theslots of all of the disks that can be employed in the lock. Each diskhas a different number of gear-teeth, and at each end of the gear-teethI provide a blank. reduced portion or space, j and k. The spaces j and kand the segmental slot of each disk are so arranged in reference to eachother that-,as the pinion J is turned so as to bring either of suchspaces against the pinion,the end of the slot will engage lug b of thelever C while the pinion is acting on the gear-tooth of the disk nearestsuch space, and when the pinion leaves such tooth the spring of thelever 0 will force the lug b against the end of the slot with sufficientforce to throw the disk far enough in the opposite direction to that inwhich it has been movedby the pinion to enable the pinion, on a reversemovement, to re-engage the teeth of the disk. It will be seen that onturning the pinion J,through the means of. the index-knob the pinion thedisk will not be moved by the further turning of the pinion,but willremain stationary. The other disks in engagement will continue to turnuntil one of the spaces, j or k, of each disk is brought opposite thepinion. The further turning of the pinion will not effect any movementof the disks; but on reversing the movement of the pinion the pinionwill, by reason of the action of the le- "er 0 and its lug Z),heretofore explained, engage the teeth of all the disks and move them inthe opposite direction until all of the opposite blank spaces of thedisks are brought into line. Thus by turning the index-knob the diskscan be moved first in one direction and then in the reverse direction inrespect to each other. This enables the disks to be operated so as tosecure the alignment of the notches P and to place the disks in suchposition that the bolt F can be retracted.

As an example of the movement of the parts necessary to open the lock,suppose the disks to be in the same relative positions as in the modelfurnished. 3y turning the index-knob three times to the left the spacesis will be broughtinto alignment. Then, without reversing, bring the 0mark on the index-knob to the line B on the face of the lock. Then turnthe knob twice around to the right and bring 85 against theline B. Thiswill align the notches in the two up per disks, or the two with thegreater number of gear-teeth. Then reverse the pinion and turn it to theleft and bring 33 against the line. This willbring the notch of the diskhaving the next greater number of teeth into alignment with the othertwo. Then reverse the pinion and bring 4t against the line, which willcomplete the alignment of all of the notches of the disks. Then, byturning the index-knob until 84: is brought against the line B, the boltcan be retracted and the lock opened. The lock is closed by throwing thebolt outward by the handle I, and then giving the pinion one, two, ormore turns in either direction.

The combination can at any time be changed by changing the order of thedisks in the lock, or by changing one or more of the disks.

\Vhat I claim, and desire to secure by Letters Patent, is-

1. [n a eoniibinatiou-lock, two or more re voluble gear-disks havingsegmcntalgears on their peripheries, the gear of each disk being of adifferent length from that of the other disk or disks and having areduced portion or space at each end of said gear, in combination withthe pinion on the index-knob engaging with the gears of all the-disks,and a springlever engaging said disks, substantially as described.

2. In a combination-lock, two or more revoluble geardisks having variantsegmental gears upon the peri pherics thereof, and in each a segmentalslot in corresponding relation with the are of the segmental gear andconcentric therewith, each of said disks being so conslructed that acertain point of the periphery thereof is to he broughtinto alignmentwith a part of the bolt, in combination with the lever C, having aspring at one end and a lug or stop at the other, and a pinion connectedwith the index-knob, substantially as described, and for the purpose setforth.

3. Two or more gear-disks of the same size pivoted upon the same axisand provided with variant segmental gears upon the peripheries thereof,notches P, and segmental slots concentric with the arc of said gears, apinion attached to the index-knob and gearing with said disks, incombination with the pivoted lever (1, provided with a spring at oneend, and at the other with a stop or lug extending through the saidslots, and bolt F, having the stem F, as and for the purpose set forth.

4-. In a combination-lock, the bolt F, hav ing notch G and stem F, acrank having a crank-pin engaging notch G, and an exterioroperating-handle for said crank, in combination with the describedgear-disks, pinion J, and lover 0, provided with a spring, a, and lug orstop b, extending through the slots of the gear-disks, substantially asand for the purposes set forth.

In testimony whereof I affix mysignature in presence of two witnesses.

ROBERT IIILDWEIN.

Witnesses:

B. F. EIBLER, V. H. BURRIDGE.

